use h264 MC code if possible 50% faster predict_plane() if mmx2/3dnow is available 0.1% bitrate increase
use h264 MC code if possible
50% faster predict_plane() if mmx2/3dnow is available
0.1% bitrate increase


git-svn-id: a4d7c1866f8397a4106e0b57fc4fbf792bbdaaaf@3455 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

prajnashi/ffmpeg,prajnashi/ffmpeg,prajnashi/ffmpeg,prajnashi/ffmpeg